powerpc/64s: Avoid saving faulting address into EX_DAR in SLB miss

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The EX_DAR save area is only used in exceptional cases. With r3 no
longer clobbered by slb_allocate_realmode, saving faulting address to
EX_DAR can be deferred to those cases.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Nicholas Piggin 2017-05-21 23:15:43 +10:00 • committed by Michael Ellerman

parent d59afffdf0

commit 7c28f04828

1 changed files with 8 additions and 5 deletions

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arch/powerpc/kernel/exceptions-64s.S

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